import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken, isTokenExpired } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login'] // 白名单

router.beforeEach(async(to, from, next) => {
  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title)

  // determine whether the user has logged in
  const hasToken = getToken()

  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
      NProgress.done()
    } else {
      // 检查 token 是否过期
      if (isTokenExpired()) {
        try {
          // token 过期，清除用户信息并跳转到登录页
          await store.dispatch('user/resetToken')
          Message.error('登录已过期，请重新登录')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
          return
        } catch (error) {
          console.error('Token 过期处理失败:', error)
        }
      }

      // 检查是否已获取用户信息
      const hasUserInfo = store.getters['user/username']
      if (hasUserInfo) {
        next()
      } else {
        try {
          // get user info
          // note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
          await store.dispatch('user/getAvatar')
          next()
        } catch (error) {
          // 获取用户信息失败，清除 token 并跳转到登录页
          await store.dispatch('user/resetToken')
          Message.error(error.message || '获取用户信息失败')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
